Akrapovic Exhaust System Harley Davidson Sportster 2006-2012 The iconic touring machines for the open road. Live the American dream with a European soundtrack. Smooth performance enhanced with Akrapovi power. Akrapovic Open Systems include header, silencer and heatshield, optional noise reduction insert is available. Power Torque The Akrapovi exhaust system noticeably improves power and torque throughout the entire rpm range. NOTE The exhaust system cannot be mounted with forward controls, or if passenger footpegs are mounted. NOTE Please check local laws before purchasing. Some modifications may be prohibited in some states.